<template>
    <div class="city-list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper" @click="cli()">
                        <div class="button">{{this.$store.state.city}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" v-for="item of hot" :key="item.id" 
                    @click="handleCityClick(item.name)">
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list" v-for="innerItem of item" :key="innerItem.id"  @click="handleCityClick(innerItem.name)">
                    <div class="item border-bottom"> {{innerItem.name}}</div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
    name:"CityList",
    props:{
        hot: Array,
        cities: Object,
        letter: String,    
    },
    methods: {
        handleCityClick(city){
            this.$store.commit('changeCity',city)
            this.$router.push('/')
        }
    },
    watch:{
        letter () {
            if(this.letter){
                const element = this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
        }
    },
    mounted(){
        this.scroll = new Bscroll(this.$refs.wrapper)
    },
}
</script>

<style scoped>
    .title{
        line-height:.54rem;
        background:#eee;
        padding-left:.2rem;
        color:#666;
        font-size:.26rem;
    }
    .city-list{
        position:absolute;
        overflow:hidden;
        top:1.58rem;
        left:0;
        right:0;
        bottom:0;
    }
    .border-topbottom &:before,.border-topbottom &:after{
        border-color:#777;
    }
    .border-bottom &:before,.border-bottom &:after{
        border-color:#777;
    }
    .button-list,.item-list{
        padding:.1rem .6rem .1rem .1rem;
        overflow:hidden;
    }
    .button-wrapper{
        width:33.33%;
        float:left;
        
    }
    .button{
        margin:.1rem;
        padding:.1rem 0;
        text-align:center;
        border:.02rem solid #ccc;
        border-radius:.06rem;
    }
    .item{
        line-height:.54rem;
        color:#666;
        padding-left:.2rem;
    }
</style>